JE Bharti Mechanical Engineering Pariksha Guide  (Paperback, Hindi, Prayag Publication)

the theory of machines at mematics of machines) 55, Scope of Theory of Machines) 5-1 of the forces acting on it. 35 Uses 11 Speed ??83 33 Knowing the speed to be done by a machine to do the said work The machines required for the motion of the machines (1) Knowledge of the forces acting on different parts of the machine (1) Suitable for different parts of the machine Selection of materials (1) Determining the size of the different parts of the machine Resistant body, which does not change its physical shape or form due to force on it, is called a resistive body. Link or element or component is a combination of one or more resistive bodies and is called part of machine and exerts force with negligible deformation. To get moving information about the work. To guide the other parts of Pisces. Kinematic pair: A pair of links in which the relative motion between the links is completely or successfully prevented. ( 11 ) stiding.pairs on the basis of relative motion of the links ( uming pair ) ( i ) higher pair ( ii ) Open pair ( Unclosed or open pair ) ( iv ) Match double ( Screw pair ) Spherical pait . ? Theoretically any relative motion in the links of this chain is possible on the basis of the contact of the links ? Constrained chain (The relative motion in different links of this chain is completely stopped. By using these chains) Many types of mechanical configurations (Mocha and machines are made. ? Unconstrained chain) The speed of the links of this chain is unconstrained and uncertain. ? Restrictions for the speed chain For any pure speed chain with the following pair, the following two The restrictions must be satisfied. 2P - 4 and 10 + 2 ) where the number of links "number of moguls 1 number of joints" Mechanism If a link to a precision chain is to be attached and this arrangement is used to transmit or change the speed If it is known, then it is called mechanical. Pair. C Such a relation that two links of the mechanism are called like this. There are four Googles. Different machines are kept in such a way that relative motion is possible in them. and are based on their reversals and One of the rotating links is called a crack or driver and the other is called a rocker or follower or lever. ? Accuracy chain The speed chain is formed by joining many precision pairs in which each link is a member of two pairs and the relative motion is also completely restricted, it is also called locked chain. Four Rod Chain Mechanism or Mechanisms Four-chain double-crank mechanism, which is used to transmit the rotational speed of one wheel to the other wheel. It is mostly used in the wheels of railway locomotives. ? Swirl Caik Yen Mechanism It is used to convert back motion into rotational motion. It is used in steam and internal engines. Fast Yapsi Mechanism It is performed by Hitav-Envoy return mantra. Supposedly used in Slaughter Machines.